Improvement in car-axle boxes



l. L. MOU LTD N.

'Patented Dec. 2,1873.

UNITED STATES PATENT CEEICE.

WILLIAM J. L. MOULTON, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO JEINSENLUBRICATOR COMPANY.

IMPROVEMENT IN CAR-AXLE BOXES.

Specifi :ation forming part of Letters Patent No. 145,227, datedDecember 2, 1873; application filed August 2, 1673.

To alt 'whom it may concern:

Beit known that I, WILLIAM J. L. MOUL- TON, of the city and county ofSan Francisco, State of California, have invented an Improvement inDust-Excluders for Railway-Car and Carriage Axles 5 and I do herebydeclare that the following is a full, clear, and exact description ot'the same, reference being had to the accompanying drawings, and to theletters marked thereon.

My invention relates to a simple means by which the dust is excludedfrom the journals of car-axles and boxes; and it consists mainly of aring of felt placed upon the journal in the back part of the box, inwhich position the upper end is held by the brass. 1t also consists ot acork dust-excluder, which is a nonconductor of oil, in place of theordinary wood or leather packing usually employed, placed in theordinary slot, as will hereinafter more fully appear.

Referring to the drawing for a more complete explanation of myinvention, Figure 1 represents a side elevation of a box with felt andcork in position. Fig. 2 is a perspective view of the corkdust-excluder. Fig. 3 is a perspective view of the felt and excluder.

A represents the cork dust-excluder, placed in the ordinary chamber orslot, the axle passing through the opening B. It should here be observedthat, cork being a non-conductor and a non-absorbent of oil, it is notliable to become limp, like leather, and take up the oil, whereby itsusefulness as a dust-excluder would be impaired. Furthermore, the corkis not so liable to become worn by friction as the leather. The mostimportant feature of my invention, however, is the application of thefelt ring C, placed around the axle against the inner wall of thelubricating chamber or box, in which position it is held at the top bythe inner end ofthe brass bearing D. By this means the Crust that wouldnaturally pass up the ordinary chamber or slot, in which thecorkexcluder is placed, into the lubricating-chamber, is prevented. Thispiece of felt also acts as a regulator of the lubricating material inthe mode of feeding the oil to the journal adopted by ius, that ofcapillary attraction, which in ordinary cases, through the medium ofwicks, draws up a surplus of oil to the journal or axle, which in mypresent improvement is absorbed by the felt, and runs back into the oilchamber or box, while it does not prevent the lubricating material fromspreading the entire length ofthe bearin g or journal. Leather or othermaterial might be employed in this position instead of the felt, but Iprefer the felt.

By this means a simple, cheap, and effective dust-excluder is had, andthe oil-box kept in a far greater degree of cleanliness than by theordinary means now employed for that purpose.

Having thus described my invent-ion, what I claim as new, and desire tosecure by Letters Patent, is-

'lhe felt ring C, placed against the inner wall of the oil-box, andhaving the axle passing through it, substantially as and for the purposespecilied and shown. f

In witness whereof I have hereunto set my hand and seal.

WM. J. L. MOULTON. [L. s.]

Witnesses C. W. M. SMITH, M. G. UP'roN.

